Targeting the Congress,senior BJP leader Rajnath Singh today alleged it was responsible for backwardness of Muslims in the country. "After independence,the Congress and its policies are responsible for backwardness of Muslims in the country," he told an election rally here. The former BJP chief also lashed out at the Congress on the issue of corruption. "This is the first time in the history of independent India when so many ministers are in jail on charges of graft," he said. On reservation for Muslims,Singh said the BJP did not indulge in politics of caste and religion. Turning to the ruling BSP,he said Chief Minister and party supremo Mayawati tried to clean her image by sacking tainted ministers. "She fully knows that a minister cannot do a scam without CM's knowledge",the former BJP chief said. The BJP,if voted to power,would set up a Commission to probe alleged irregularities during SP and BSP regimes,he said.